1982131 has 8 divisors (see below), whose sum is σ = 2044224. Its totient is φ = 1920960.

The previous prime is 1982129. The next prime is 1982153. The reversal of 1982131 is 1312891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1982131 - 2¹ = 1982129 is a prime.

It is a super-2 number, since 2×1982131² = 7857686602322, which contains 22 as substring.

It is a Duffinian number.

1982131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1982096 and 1982105.

It is not an unprimeable number, because it can be changed into a prime (1982111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8391 + ... + 8623.

It is an arithmetic number, because the mean of its divisors is an integer number (255528).

2^1982131 is an apocalyptic number.

1982131 is a deficient number, since it is larger than the sum of its proper divisors (62093).

1982131 is a wasteful number, since it uses less digits than its factorization.

1982131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461.

The product of its digits is 432, while the sum is 25.

The square root of 1982131 is about 1407.8817421929. The cubic root of 1982131 is about 125.6157564381.

The spelling of 1982131 in words is "one million, nine hundred eighty-two thousand, one hundred thirty-one".